- A Exactly one single, fixed protein product with little variation across different tissues
- B Multiple different proteins from the same pre-mRNA by including/excluding different exons
- C Mainly two fixed protein variants regardless of the tissue type being examined
- D Mainly progressively shorter, truncated protein products lacking key functional domains
Correct answer: B. Multiple different proteins from the same pre-mRNA by including/excluding different exons
Explanation: Alternative splicing: different combinations of exons are joined to create multiple mRNA isoforms from one gene. Greatly expands protein diversity (~95% of human genes undergo it).
Concept context
Mendel's laws, inheritance patterns, DNA structure, and molecular biology. Core of NEET biology.
Read the full Principles of Inheritance and Variation notes →